1 /*
2 [auto_generated]
3 boost/numeric/odeint/util/state_wrapper.hpp
4
5 [begin_description]
6 State wrapper for the state type in all stepper. The state wrappers are responsible for construction,
7 destruction, copying construction, assignment and resizing.
8 [end_description]
9
10 Copyright 2011-2013 Karsten Ahnert
11 Copyright 2011 Mario Mulansky
12
13 Distributed under the Boost Software License, Version 1.0.
14 (See accompanying file LICENSE_1_0.txt or
15 copy at http://www.boost.org/LICENSE_1_0.txt)
16 */
17
18
19 #ifndef BOOST_NUMERIC_ODEINT_UTIL_RESIZE_HPP_INCLUDED
20 #define BOOST_NUMERIC_ODEINT_UTIL_RESIZE_HPP_INCLUDED
21
22 #include <boost/range.hpp>
23
24 #include <boost/utility/enable_if.hpp>
25 #include <boost/fusion/include/is_sequence.hpp>
26 #include <boost/fusion/include/zip_view.hpp>
27 #include <boost/fusion/include/vector.hpp>
28 #include <boost/fusion/include/make_fused.hpp>
29 #include <boost/fusion/include/for_each.hpp>
30
31 #include <boost/numeric/odeint/util/is_resizeable.hpp>
32
33 namespace boost {
34 namespace numeric {
35 namespace odeint {
36
37
38 template< class StateOut , class StateIn , class Enabler = void >
39 struct resize_impl_sfinae
40 {
resizeboost::numeric::odeint::resize_impl_sfinae41 static void resize( StateOut &x1 , const StateIn &x2 )
42 {
43 x1.resize( boost::size( x2 ) );
44 }
45 };
46
47 // resize function
48 // standard implementation relies on boost.range and resize member function
49 template< class StateOut , class StateIn >
50 struct resize_impl
51 {
resizeboost::numeric::odeint::resize_impl52 static void resize( StateOut &x1 , const StateIn &x2 )
53 {
54 resize_impl_sfinae< StateOut , StateIn >::resize( x1 , x2 );
55 }
56 };
57
58
59 // do not overload or specialize this function, specialize resize_impl<> instead
60 template< class StateOut , class StateIn >
resize(StateOut & x1,const StateIn & x2)61 void resize( StateOut &x1 , const StateIn &x2 )
62 {
63 resize_impl< StateOut , StateIn >::resize( x1 , x2 );
64 }
65
66
67 namespace detail {
68
69 struct resizer
70 {
71 typedef void result_type;
72
73 template< class StateOut , class StateIn >
operator ()boost::numeric::odeint::detail::resizer74 void operator()( StateOut &x1 , const StateIn &x2 ) const
75 {
76 resize_op( x1 , x2 , typename is_resizeable< StateOut >::type() );
77 }
78
79 template< class StateOut , class StateIn >
resize_opboost::numeric::odeint::detail::resizer80 void resize_op( StateOut &x1 , const StateIn &x2 , boost::true_type ) const
81 {
82 resize( x1 , x2 );
83 }
84
85 template< class StateOut , class StateIn >
resize_opboost::numeric::odeint::detail::resizer86 void resize_op( StateOut &/*x1*/ , const StateIn &/*x2*/ , boost::false_type ) const
87 {
88 }
89
90 };
91 } // namespace detail
92
93
94 /*
95 * specialization for fusion sequences
96 */
97 template< class FusionSeq >
98 struct resize_impl_sfinae< FusionSeq , FusionSeq ,
99 typename boost::enable_if< typename boost::fusion::traits::is_sequence< FusionSeq >::type >::type >
100 {
resizeboost::numeric::odeint::resize_impl_sfinae101 static void resize( FusionSeq &x1 , const FusionSeq &x2 )
102 {
103 typedef boost::fusion::vector< FusionSeq& , const FusionSeq& > Sequences;
104 Sequences sequences( x1 , x2 );
105 boost::fusion::for_each( boost::fusion::zip_view< Sequences >( sequences ) , boost::fusion::make_fused( detail::resizer() ) );
106 }
107 };
108
109
110
111
112 }
113 }
114 }
115
116
117
118 #endif // BOOST_NUMERIC_ODEINT_UTIL_RESIZE_HPP_INCLUDED
119